Add --export option to --detail to use key=value pairs.

udev likes to get information about a device as key=value pairs so it
can create disk/by-id links etc.  So add --export flag which causes
the output of --detail to easily parsable.

From: Kay Sievers <kay.sievers@novell.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/mdadm.8 b/mdadm.8
index 11000fd..b0aeaac 100644
--- a/mdadm.8
+++ b/mdadm.8
@@ -910,6 +910,14 @@ Information about what is discovered is presented.
 Print detail of one or more md devices.
 
 .TP
+.BR \-Y ", " \-\-export
+When used with
+.BR \-\-detail ,
+output will be formatted as
+.B key=value
+pairs for easy import into the environment.
+
+.TP
 .BR \-E ", " \-\-examine
 Print content of md superblock on device(s).
 .TP